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As of 18:08 CDT

Weather in Harness, IL

84°Current weather

Harness, Saturday, 8 August, 18:08

Clear. Feels like 83°. High 86°, low 70°.

Pressure30.00 inHg
Wind2 mph NW
Humidity37%
Visibility6.2 mi
Dew point59°
Sun, 0992° / 70°0Overcast
92 °Overcast

Harness, Sunday, 9 August

Overcast. High 92°, low 70°.

Pressure29.91 inHg
Wind15.5 mph S
Humidity63%
Visibility6.2 mi
Dew point73°
Mon, 1095° / 76°0Overcast
95 °Overcast

Harness, Monday, 10 August

Overcast. High 95°, low 76°.

Pressure29.91 inHg
Wind12.2 mph SW
Humidity51%
Visibility6.2 mi
Dew point71°
Tue, 1194° / 78°0Overcast
94 °Overcast

Harness, Tuesday, 11 August

Overcast. High 94°, low 78°.

Pressure29.83 inHg
Wind12.5 mph SW
Humidity50%
Visibility6.2 mi
Dew point68°
Wed, 1284° / 71°0Overcast
84 °Overcast

Harness, Wednesday, 12 August

Overcast. High 84°, low 71°.

Pressure29.85 inHg
Wind13 mph NE
Humidity69%
Visibility6.2 mi
Dew point73°
Thu, 1372° / 65°0.44Rain
72 °Rain

Harness, Thursday, 13 August

Rain. High 72°, low 65°.

Pressure29.88 inHg
Wind11.5 mph NE
Humidity98%
Visibility—
Dew point71°
Fri, 1476° / 55°0Clear
76 °Clear

Harness, Friday, 14 August

Clear. High 76°, low 55°.

Pressure30.18 inHg
Wind9.4 mph NE
Humidity53%
Visibility—
Dew point54°
Sat, 1576° / 56°0Overcast
76 °Overcast

Harness, Saturday, 15 August

Overcast. High 76°, low 56°.

Pressure30.30 inHg
Wind7.6 mph SE
Humidity48%
Visibility—
Dew point51°
Sun, 1678° / 58°0Overcast
78 °Overcast

Harness, Sunday, 16 August

Overcast. High 78°, low 58°.

Pressure30.15 inHg
Wind12.2 mph S
Humidity55%
Visibility—
Dew point58°
Mon, 1785° / 67°0.07Light rain
85 °Light rain

Harness, Monday, 17 August

Light rain. High 85°, low 67°.

Pressure29.94 inHg
Wind11.9 mph S
Humidity71%
Visibility—
Dew point71°
Tue, 1886° / 71°0Overcast
86 °Overcast

Harness, Tuesday, 18 August

Overcast. High 86°, low 71°.

Pressure30.00 inHg
Wind8.3 mph NE
Humidity61%
Visibility—
Dew point69°
Wed, 1991° / 69°0Partly cloudy
91 °Partly cloudy

Harness, Wednesday, 19 August

Partly cloudy. High 91°, low 69°.

Pressure29.91 inHg
Wind8.1 mph S
Humidity55%
Visibility—
Dew point68°
Thu, 2084° / 68°0.32Rain
84 °Rain

Harness, Thursday, 20 August

Rain. High 84°, low 68°.

Pressure29.88 inHg
Wind11 mph NE
Humidity62%
Visibility—
Dew point68°
Fri, 2183° / 64°0Mostly clear
83 °Mostly clear

Harness, Friday, 21 August

Mostly clear. High 83°, low 64°.

Pressure29.94 inHg
Wind9.6 mph NE
Humidity54%
Visibility—
Dew point61°
Sat, 2288° / 61°0.07Light rain
88 °Light rain

Harness, Saturday, 22 August

Light rain. High 88°, low 61°.

Pressure29.91 inHg
Wind15.3 mph NE
Humidity48%
Visibility—
Dew point59°
Sun, 2372° / 54°0Light rain
72 °Light rain

Harness, Sunday, 23 August

Light rain. High 72°, low 54°.

Pressure30.18 inHg
Wind13.2 mph E
Humidity45%
Visibility—
Dew point46°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Harness, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Harness, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.